Prospective Study of Estrogens during Pregnancy and Risk of Breast Cancer
نویسندگان
چکیده
Breast cancer prevention and control may benefit by elucidation of natural protective mechanisms. Pregnancy is an excellent model for studying protective mechanisms under conditions of promotion, when women are exposed to a variety of growth factors and hormones. The purpose of our research was to test the hypothesis that maternal serum levels of steroid hormones can explain novel protective associations that we recently reported for placental characteristics.
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